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Articles 2701 - 2730 of 3676

Full-Text Articles in Oceanography and Atmospheric Sciences and Meteorology

Topographic Control Of Asynchronous Glacial Advances: A Case Study From Annapurna, Nepal, Beth Pratt-Sitaula, Douglas W. Burbank, Arjun M. Heimsath, Neil F. Humphrey, Michael Oskin, Jaakko Putkonen Dec 2011

Topographic Control Of Asynchronous Glacial Advances: A Case Study From Annapurna, Nepal, Beth Pratt-Sitaula, Douglas W. Burbank, Arjun M. Heimsath, Neil F. Humphrey, Michael Oskin, Jaakko Putkonen

All Faculty Scholarship for the College of the Sciences

Differences in the timing of glacial advances, which are commonly attributed to climatic changes, can be due to variations in valley topography. Cosmogenic 10Be dates from 24 glacial moraine boulders in 5 valleys define two age populations, late-glacial and early Holocene. Moraine ages correlate with paleoglacier valley hypsometries. Moraines in valleys with lower maximum altitudes date to the lateglacial, whereas those in valleys with higher maximum altitudes are early Holocene. Two valleys with similar equilibrium-line altitudes (ELAs), but contrasting ages, are < 5 km apart and share the same aspect, such that spatial differences in climate can be excluded. A glacial mass-balance cellular automata model of these two neighboring valleys predicts that change from a cooler-drier to warmer-wetter climate (as at the Holocene onset) would lead to the glacier in the higher altitude catchment advancing, while the lower one retreats or disappears, even though the ELA only shifted by ~120 m.


Addressing Global Climate Change In An Age Of Political Climate Change, Brigham Daniels Dec 2011

Addressing Global Climate Change In An Age Of Political Climate Change, Brigham Daniels

BYU Law Review

For a number of years, many within the environmental legal community have advocated an all-out attack strategy of forcing the United States to address climate change by bringing novel lawsuits under existing environmental laws. In 2007, with the seminal case of Massachusetts v. EPA, it appeared that those advocating this strategy had a winning game plan. That sense grew and solidified when the Obama Administration came to power. However, over the past several years, we have seen a countervailing movement embodied in a growing resentment towards EPA and climate change policy in general. This movement has mobilized into a powerful …


A Learning Collaboratory: Improving Federal Climate Change Adaptation Planning, Alejandro E. Camacho Dec 2011

A Learning Collaboratory: Improving Federal Climate Change Adaptation Planning, Alejandro E. Camacho

BYU Law Review

No abstract provided.


Adapting To Climate Change While Planning For Disaster: Footholds, Rope Lines, And The Iowa Floods, Robert R.M. Verchick, Abby Hall Dec 2011

Adapting To Climate Change While Planning For Disaster: Footholds, Rope Lines, And The Iowa Floods, Robert R.M. Verchick, Abby Hall

BYU Law Review

No abstract provided.


Do You Believe The Climate Is Changing? Answers From New Survey Research, Lawrence C. Hamilton Dec 2011

Do You Believe The Climate Is Changing? Answers From New Survey Research, Lawrence C. Hamilton

Carsey Publications

This brief explores how political views influence Americans’ understanding and perception of science. The research is based on a national version of the Community and Environment in Rural America survey called NCERA, and on New Hampshire’s statewide Granite State Poll. Author Lawrence Hamilton reports that most people on both surveys feel that they understand either a great deal or a moderate amount about global warming or climate change. However, deep partisan divisions affect both personal beliefs about climate change and perceptions of agreement among scientists. Democrats are much more likely to state they believe that climate change is happening, caused …


Global Change, Global Trade, And The Next Wave Of Plant Invasions, Bethany A. Bradley, Dana M. Blumenthal, Regan Early, Edwin D. Grosholz, Joshua J. Lawler, Luke P. Miller, Cascade J.B. Sorte, Carla M. D'Antonio, Jeffrey M. Diez, Jeffrey S. Dukes, Ines Ibanez, Julian D. Olden Dec 2011

Global Change, Global Trade, And The Next Wave Of Plant Invasions, Bethany A. Bradley, Dana M. Blumenthal, Regan Early, Edwin D. Grosholz, Joshua J. Lawler, Luke P. Miller, Cascade J.B. Sorte, Carla M. D'Antonio, Jeffrey M. Diez, Jeffrey S. Dukes, Ines Ibanez, Julian D. Olden

Faculty Publications, Biological Sciences

Many non-native plants in the US have become problematic invaders of native and managed ecosystems, but a new generation of invasive species may be at our doorstep. Here, we review trends in the horticultural trade and invasion patterns of previously introduced species and show that novel species introductions from emerging horticultural trade partners are likely to rapidly increase invasion risk. At the same time, climate change and water restrictions are increasing demand for new types of species adapted to warm and dry environments. This confluence of forces could expose the US to a range of new invasive species, including many …


Climate Change And Climate Variability: El Salvador – Impacts On Productivity Of Grain Crops And Opportunities For Management And Improvement, P. V. Vara Prasad Dec 2011

Climate Change And Climate Variability: El Salvador – Impacts On Productivity Of Grain Crops And Opportunities For Management And Improvement, P. V. Vara Prasad

INTSORMIL Presentations

1. Climate change and climate variability (past and future).

2. Climate change and variability in El Salvador (climate models).

3. Impact of temperature on grain yield of dry bean, maize and sorghum in El Salvador (crop simulation models).

4. Effects of temperature, drought and/or carbon dioxide: experimental evidence (response of grain sorghum, maize and dry bean).

5. Opportunities for crop management and genetic improvement.


Simulated Effects Of Varied Landscape-Scale Fuel Treatments On Carbon Dynamics And Fire Behavior In The Klamath Mountains Of California, Kevin J. Osborne Dec 2011

Simulated Effects Of Varied Landscape-Scale Fuel Treatments On Carbon Dynamics And Fire Behavior In The Klamath Mountains Of California, Kevin J. Osborne

Master's Theses

I utilized forest growth model (FVS-FFE) and fire simulation software (FlamMap, Randig), integrated through GIS software (ArcMap9.3), to quantify the impacts varied landscape-scale fuel treatments have on short-term onsite carbon loss, long-term onsite carbon storage, burn probability, conditional flame length, and mean fire size. Thirteen fuel treatment scenarios were simulated on a 42,000 hectare landscape in northern California: one untreated, three proposed by the US Forest Service, and nine that were spatially-optimized and developed with the Treatment Optimization Model in FlamMap. The nine scenarios developed in FlamMap varied by treatment intensity (10%, 20%, and 30% of the landscape treated) and …


Atlantic Multidecadal Oscillation-Forced Regional Summertime Precipitation Variations In The Central United States, Michael C. Veres Dec 2011

Atlantic Multidecadal Oscillation-Forced Regional Summertime Precipitation Variations In The Central United States, Michael C. Veres

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

The purpose of this research is to identify the regional mechanisms by which the Atlantic Multidecadal Oscillation (AMO) influences summer (June-August) precipitation in the central U.S. This was accomplished by running two different sets of simulations using the Weather Research and Forecasting (WRF) regional climate model, one forced by observations and the other forced only by variations in the AMO as obtained via a global climate model (GCM). The results reveal a complex set of mechanisms active in the lower and middle troposphere by which the AMO influences summer circulation and precipitation in the central U.S. During the cold phase …


Lsuhsc Facilities Biweekly Update: December 2011, Lsuhsc Property And Facilities Management Dec 2011

Lsuhsc Facilities Biweekly Update: December 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Biweekly Updates: 2011

LSUHSC Facilities Biweekly Updates from December 2 and 16, 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


Lsuhsc Facilities Daily Updates: December 2011, Lsuhsc Property And Facilities Management Dec 2011

Lsuhsc Facilities Daily Updates: December 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Daily Updates: 2011

LSUHSC Facilities Daily Updates from December 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


A Landscape Approach To Late Prehistoric Settlement And Subsistence Patterns In The Mojave Sink, Tiffany Ann Thomas Dec 2011

A Landscape Approach To Late Prehistoric Settlement And Subsistence Patterns In The Mojave Sink, Tiffany Ann Thomas

UNLV Theses, Dissertations, Professional Papers, and Capstones

The environment of the Late Prehistoric period (1200 A.D. to Historic Contact) Mojave Sink was wetter than modern conditions. The settlement and subsistence patterns of the occupants of the region during this period were driven by the availability of water, subsistence resources, raw material sources, and tradition. These people utilized the regional landscape based upon the seasonal availability of these resources. Supplemental agricultural production has been proposed for the Mojave River Delta due to the more favorable environmental conditions of this period. If agriculture was being practiced it would have affected the regional land-use patterns. For this thesis I propose …


Hydroclimatic Forecasting In The Western United States Using Paleoclimate Reconstructions And Data-Driven Models, Christopher Allen Carrier Dec 2011

Hydroclimatic Forecasting In The Western United States Using Paleoclimate Reconstructions And Data-Driven Models, Christopher Allen Carrier

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis investigated climate variability and their associated hydrologic responses in the western United States. The western United States faces the problem of water scarcity, where the management and mitigation of available water supplies are further complicated by climate variability. Climate variability associated with the phases of oceanic-atmospheric oscillations has been shown to influence streamflow and precipitation, where predictive relationships have led to the possibility of producing long-range forecasts. Based on literature review, four oceanic-atmospheric oscillation indices were identified in having the most prominent influence over the western United States including the El Niño - Southern Oscillation (ENSO), Pacific Decadal …


Changing Climatic Conditions In The Colorado River Basin: Implications For Water Resources Management In The Las Vegas Valley, Srijana Dawadi Dec 2011

Changing Climatic Conditions In The Colorado River Basin: Implications For Water Resources Management In The Las Vegas Valley, Srijana Dawadi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Climate change affects the water available in a region. It also affects the water demand, because of the increase in temperature. A system dynamics model was developed for the Colorado River Basin (CRB), operating at a monthly time scale, to assess the potential impacts of climate change on streamflow in the Colorado River and its subsequent impact on the water resources management in the Las Vegas Valley (LVV). The effect of climate change on streamflow was evaluated using 16 global climate model outputs for 3 emission scenarios, also referenced in the Inter-Governmental Panel on Climate Change Fourth Assessment Report. Risk …


Climate Change In The Piscataqua/Great Bay Region: Past, Present, And Future, Cameron P. Wake, Elizabeth Burakowski, Eric Kelsey, Katharine Hayhoe, Anne Stoner, Chris Watson, Ellen Douglas Nov 2011

Climate Change In The Piscataqua/Great Bay Region: Past, Present, And Future, Cameron P. Wake, Elizabeth Burakowski, Eric Kelsey, Katharine Hayhoe, Anne Stoner, Chris Watson, Ellen Douglas

The Sustainability Institute Publications

Earth ’s climate changes. It always has and always will. However, an extensive body of scientific evidence indicates that human activities are now a significant force driving change in the Earth’s climate system. This report describes how the climate of the Piscataqua/Great Bay region of coastal New Hampshire in the United States has changed over the past century and how the future climate of the region will be affected by human activities that are warming the planet.

Overall, the region has been getting warmer and wetter over the last century, and the rate of change has increased over the last …


Sustainability And Climate Models For The Intermountain West: An Annotated Bibliography, Marianne A. Buehler, William E. Brown Jr. Nov 2011

Sustainability And Climate Models For The Intermountain West: An Annotated Bibliography, Marianne A. Buehler, William E. Brown Jr.

Brookings Mountain West Publications

This resource on climate models and sustainability in the Intermountain West, a region that includes the states of Arizona, Colorado, Idaho, Nevada, New Mexico, and Utah, is a collaborative effort between the UNLV Libraries (http://library.unlv.edu/) and Brookings Mountain West (http://brookingsmtnwest.unlv.edu/).

The selected citations include academic, government, and non-profit information that highlight ongoing research on climate models and sustainability efforts in the region. The websites, government studies, independent reports, scholarly articles, and media reports reflect the diversity and complexity of climate change and sustainability issues in a region that contains widely varying ecosystems. The Intermountain West, with its deserts, basins, mountains, …


Lsuhsc Facilities Biweekly Update: November 2011, Lsuhsc Property And Facilities Management Nov 2011

Lsuhsc Facilities Biweekly Update: November 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Biweekly Updates: 2011

LSUHSC Facilities Biweekly Updates from November 4 and 18, 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


Lsuhsc Facilities Daily Updates: November 2011, Lsuhsc Property And Facilities Management Nov 2011

Lsuhsc Facilities Daily Updates: November 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Daily Updates: 2011

LSUHSC Facilities Daily Updates from November 2011.

On the original documents, the daily update for Tuesday, November 8, 2011 was misdated as Tuesday, November 9, 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


Environmental Prediction In Canadian Cities, James Voogt Oct 2011

Environmental Prediction In Canadian Cities, James Voogt

Geography & Environment Presentations

No abstract provided.


Effects Of Climate Change On Spring Ecosystem Hydroecology As A Guide To Developing Alternative Water Policies, Scott Mensing, Saxon E. Sharpe, Scott Bassett, Don Sada, Jim Thomas Oct 2011

Effects Of Climate Change On Spring Ecosystem Hydroecology As A Guide To Developing Alternative Water Policies, Scott Mensing, Saxon E. Sharpe, Scott Bassett, Don Sada, Jim Thomas

Climate Change Seminar Series (NNE)

Hydroecology: the interface of ecological systems and water which combines the scientific disciplines of hydrology and ecology

Goal: evaluate the hydrologic and climate history using pollen, loss on ignition, total inorganic carbon, and invertebrates from spring sediments in Spring Valley, Eastern Nevada and Snake Valley, Western Utah


Droughtscape, Fall 2011, Kelly Smith Oct 2011

Droughtscape, Fall 2011, Kelly Smith

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Drought Preparedness Community Options

Drought Likely to Persist, Intensify Across South

Database Will Help Planners Find Options

Impacts: Ag Losses, Fire, Water Restrictions

NDMC Welcomes International Visitors

New Drought Impact Reporter Online

Sim-Drought, Available Now at Select Agencies


Analysis Of Potential Climate Change In Putnam County, Julia Roell, Peter Konieczny, Rudra Vishweshwar, Ben Harsha, Weiqing Zhang, Jim Mills Oct 2011

Analysis Of Potential Climate Change In Putnam County, Julia Roell, Peter Konieczny, Rudra Vishweshwar, Ben Harsha, Weiqing Zhang, Jim Mills

Student Research

During fall semester, 2011, five students in HONR 191, Science Research Fellows, were charged with determining if there was evidence of local climate change over the last 150 years as part of the larger global climate change phenomena the Earth is currently experiencing. The study consisted of two parts: one, an analysis of local climate data (temperature and precipitation) over the last 150 years, and two, an analysis of local tree rings.

Tree rings have the potential to provide information on local climate change as annual tree ring width is, in part, a function of temperature, precipitation, and nutrient availability. …


Lsuhsc Facilities Biweekly Update: October 2011, Lsuhsc Property And Facilities Management Oct 2011

Lsuhsc Facilities Biweekly Update: October 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Biweekly Updates: 2011

LSUHSC Facilities Biweekly Updates from October 7 and 21, 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


Lsuhsc Facilities Daily Updates: October 2011, Lsuhsc Property And Facilities Management Oct 2011

Lsuhsc Facilities Daily Updates: October 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Daily Updates: 2011

LSUHSC Facilities Daily Updates from October 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


Lsuhsc Facilities Biweekly Update: September 2011, Lsuhsc Property And Facilities Management Sep 2011

Lsuhsc Facilities Biweekly Update: September 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Biweekly Updates: 2011

LSUHSC Facilities Biweekly Updates from September 9 and 23, 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


Lsuhsc Facilities Daily Updates: September 2011, Lsuhsc Property And Facilities Management Sep 2011

Lsuhsc Facilities Daily Updates: September 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Daily Updates: 2011

LSUHSC Facilities Daily Updates from September 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


Pakistan's Two-Stage Monsoon And Links With The Recent Climate Change, Shih-Yu (Simon) Wang, Robert Davies, Wan Ru Huang, Robert R. Gillies Aug 2011

Pakistan's Two-Stage Monsoon And Links With The Recent Climate Change, Shih-Yu (Simon) Wang, Robert Davies, Wan Ru Huang, Robert R. Gillies

Plants, Soils, and Climate Faculty Publications

Meteorological conditions related to the Pakistan floods of 2010 were examined in the context of monsoon dynamics and large‐scale circulations. Case and climatological analyses suggest that summer precipitation in northern Pakistan comprises two distinct phases: (1) a premonsoon trough phase (July) whose rainfall is more episodic and intense, occurring prior to arrival of the monsoon trough, and (2) a monsoon trough phase (August) whose rainfall is persistent, yet less episodic, driven by northward migration of the monsoon trough. Analyses of conditional instability, moisture flux, and circulation features support a persistent increase in conditional instability during the July premonsoon trough phase, …


A Climatology Of High-Wind Events Associated With Post-Tropical Cyclones In The United States, Joshua M. Gilliland Aug 2011

A Climatology Of High-Wind Events Associated With Post-Tropical Cyclones In The United States, Joshua M. Gilliland

Masters Theses & Specialist Projects

During 1951-2009, 47% of all tropical systems (TSs) within the Atlantic Basin transitioned to post-tropical (PTC) extratropical classification. These systems have shown the capability of producing hurricane-force winds and gusts for portions of the eastern United States. This study provides a climatological foundation for high-wind observations that were contributed from PTCs. In this study, 76 PTC systems were identified and tracked using six hourly observations from the National Hurricane Center’s HURDAT dataset. Mean wind radii buffers were calculated and used to determine the high-wind observations attributed by PTCs. High-wind climatology was developed by using hourly surface wind data from the …


Lsuhsc Facilities Daily Updates: August 2011, Lsuhsc Property And Facilities Management Aug 2011

Lsuhsc Facilities Daily Updates: August 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Daily Updates: 2011

LSUHSC Facilities Daily Updates from August 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


Lsuhsc Facilities Biweekly Update: August 2011, Lsuhsc Property And Facilities Management Aug 2011

Lsuhsc Facilities Biweekly Update: August 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Biweekly Updates: 2011

LSUHSC Facilities Biweekly Updates from August 12 and 26, 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.